Contagious equine metritis,
United Kingdom
Information received on 15/07/2020 from Dr Christine Middlemiss, Chief Veterinary Officer, DEFRA, Department for Environment,Food and Rural Affairs , London, United Kingdom
Summary
Report type Follow-up report No. 1 (Final report)
Date of start of the event 01/04/2020
Date of confirmation of the event 03/04/2020
Report date 15/07/2020
Date submitted to OIE 15/07/2020
Date event resolved 06/07/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 11/09/2012
Manifestation of disease Sub-clinical infection
Causal agent Taylorella equigenitalis
Nature of diagnosis Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (06/04/2020)
Follow-up report No. 1 (15/07/2020)
Outbreaks There are no new outbreaks in this report
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments Whilst carrying out a routine pre-breeding sampling, an imported 6 year old Warmblood stallion has been confirmed positive for Contagious Equine Metritis (CEM). It is now placed under restrictions on the stud whilst investigation and tracings continue.The Stallion and one identified contact mare same inseminated on a different premises are undergoing treatment. Update 10/07/2020 Stallion has remained isolated with close attention to cleaning and disinfection, the stallion was treated with penile cleaning and antibiotics. As the stallion was intended for artificial insemination rather than natural covering, a raw semen sample was also tested along with the final set of penile swabs(second set added on diagnostic tests results). In total three sets of penile swabs were taken at intervals of at least seven days and tested by aerobic and micro-aerophilic culture and by PCR tests.All tests had negative results confirmed. Restrictions have now been lifted and the case is considered resolved.
Control measures
Measures applied
  • Movement control inside the country
  • Traceability
  • Disinfection
  • Vaccination permitted (if a vaccine exists)
  • Treatment of affected animals (antibacterial wash and topical antibiotic cream)
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Liphook Equine Hospital (Local laboratory) Equidae bacteriological examination 01/04/2020 Positive
Liphook Equine Hospital (Local laboratory) Equidae bacteriological examination 11/06/2020 Negative
Liphook Equine Hospital (Local laboratory) Equidae bacteriological examination 18/06/2020 Negative
Liphook Equine Hospital (Local laboratory) Equidae bacteriological examination 26/06/2020 Negative
Liphook Equine Hospital (Local laboratory) Equidae bacteriological examination 26/06/2020 Negative
Liphook Equine Hospital (Local laboratory) Equidae polymerase chain reaction (PCR) 01/04/2020 Positive
Liphook Equine Hospital (Local laboratory) Equidae polymerase chain reaction (PCR) 11/06/2020 Negative
Liphook Equine Hospital (Local laboratory) Equidae polymerase chain reaction (PCR) 18/06/2020 Negative
Liphook Equine Hospital (Local laboratory) Equidae polymerase chain reaction (PCR) 26/06/2020 Negative
Liphook Equine Hospital (Local laboratory) Equidae polymerase chain reaction (PCR) 26/06/2020 Negative
APHA PENRITH (National laboratory) Equidae polymerase chain reaction (PCR) 03/04/2020 Positive
Future Reporting
The event is resolved. No more reports will be submitted.